chapter12 - b) Spicules c) Archaeocytes 5. Choanocytes 6....

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Chapter 12 I. Kingdom Animalia    A. Multicellular animals (metazoa) divided into three “grades” 1.   Mesozoa 2.   Parazoa 3.   Eumetazoa II. Phylum Mesozoa  III. Phylum Placozoa   IV. Phylum Porifera A.   Sessile, aquatic (mostly marine) B.   no true tissues C.   Range in size from several mm to 2+ m in diameter D. Structure and function  1.   Body form— a) Asconoid b) Syconoid c) Leuconoid 2. Structures a)  Spongocoel b)   Ostia
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c)   Osculum 3.   Pinacocytes 4.   Mesohyl a)     Spongin
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Unformatted text preview: b) Spicules c) Archaeocytes 5. Choanocytes 6. Reproduction a) Asexual (1) Gemmules (2) regeneration b) Sexual E. Classification 1. Class Calcarea a) Asconoid, syconoid, or leuconoid 2. Class Hexactinellidasiliceous a) Syconoid and leuconoid forms 3. Class Demospongiaesiliceous a) leuconoid b) Includes commercial bath sponge F. Phylogeny and adaptive radiation 1. Origin 2. Diversity...
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This note was uploaded on 08/30/2008 for the course BIOL 3454 taught by Professor Lab during the Fall '08 term at UT Arlington.

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chapter12 - b) Spicules c) Archaeocytes 5. Choanocytes 6....

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